This Solution applies to all versions of Ivanti Service Manager (current version, on the date when this article is created is 2017.3)
When creating new Remote Host Connection error message appears. You are able to proceed after clicking OK, but created connection will not work properly.
According to reported tickets, such error message may appear in different situations also.
Solution / Workaround:
1. Open System Configuration Wizard, pass through all steps (it is not required to change anything). If it is not possible to go through all steps, please try at least first 4.
2. Restart IIS.